Hello, the main issue with this bug is whenever I make a flying machine that may be moving at a relatively quick pace, some of the blocks may leave duplicates behind, this is different from the ghost blocks from before as these blocks are actually there, and if another flying machine travels after the first one it may pick up the components that were duplicated, breaking the machine, this duplicates obersvers, slime blocks, and pistons and may be used to duplicate other blocks attached to the slime blocks. This may be caused due to the extreme lag caused by the change in piston transparency mentioned in another bug report.